package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1.将页面提交的密码password进行md5加密处理，得到加密后的字符串
        String password = DigestUtils.md5DigestAsHex(employee.getPassword().getBytes());
        //2.根据页面提交的用户名username查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(Employee::getUsername, employee.getUsername());
        //查询单个
        Employee emp = employeeService.getOne(wrapper);
        //3.如果没有查询到用户名，则返回失败结果
        if (emp == null) {
            return R.error("用户名不存在");
        }

        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误");
        }

        if (emp.getStatus() == 0) {
            return R.error("该账户被封禁");
        }

        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工信息为：" + employee);
        //设置md5加密的员工初始密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //新增时间和更新时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
        //Long empId = (Long) request.getSession().getAttribute("employee");

        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     *  员工分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {},name = {}", page, pageSize, name);
        //1.构造条件构造器
        LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper<>();
        //2.构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //3.添加过滤条件
        wrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //4.添加排序条件
        wrapper.orderByDesc(Employee::getUpdateTime);
        //5.执行查询
        employeeService.page(pageInfo, wrapper);
        return R.success(pageInfo);
    }

    /**
     * 修改员工信息
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());

        //Long empId = (Long) request.getSession().getAttribute("employee");

        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询信息,回显
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> GetOne(@PathVariable Long id) {
        log.info("本次请求修改的id为:" + id);
        Employee byId = employeeService.getById(id);
        return R.success(byId);
    }
}
